Datasheet

Data Sheet ADN2812
Rev. E | Page 3 of 28
SPECIFICATIONS
T
A
= T
MIN
to T
MAX
, VCC = V
MIN
to V
MAX
, VEE = 0 V, C
F
= 0.47 µF, SLICEP = SLICEN = VEE, input data pattern: PRBS 2
23
− 1,
unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
QUANTIZER—DC CHARACTERISTICS
Input Voltage Range @ PIN or NIN, dc-coupled 1.8 2.8 V
Peak-to-Peak Differential Input PIN – NIN 2.0 V
Input Common-Mode Level DC-coupled (see Figure 28, Figure 29,
and Figure 30)
2.3 2.5
2.8
V
Differential Input Sensitivity 2
23
− 1 PRBS, ac-coupled,
1
BER = 1 × 10
–10
10 6 mV p-p
Input Overdrive (see Figure 12) 5 3 mV p-p
Input Offset 500 µV
Input RMS Noise BER = 1 x 10
–10
290 µV rms
QUANTIZER—AC CHARACTERISTICS
Data Rate 12.3 2700 Mb/s
S11 @ 2.5 GHz −15 dB
Input Resistance Differential 100 Ω
Input Capacitance 0.65 pF
QUANTIZER—SLICE ADJUSTMENT
Gain SLICEP – SLICEN = ±0.5 V 0.08 0.1 0.125 V/V
Differential Control Voltage Input SLICEP – SLICEN −0.95 +0.95 V
Control Voltage Range DC level @ SLICEP or SLICEN VEE 0.95 V
Slice Threshold Offset 1 mV
LOSS OF SIGNAL DETECT (LOS)
Loss of Signal Detect Range R
Thresh
= 0 Ω (see Figure 5) 11 13 17 mV
R
Thresh
= 100 kΩ 1.5 3 4.0 mV
Hysteresis (Electrical) OC-48
R
Thresh
= 0 Ω
5.6
6
7.2
dB
R
Thresh
= 100 kΩ 3.7 6 8.4 dB
OC-1
R
Thresh
= 0 Ω 5.6 6 7.2 dB
R
Thresh
= 10 kΩ 2.0 4 6.7 dB
LOS Assert Time DC-coupled
2
500 ns
LOS Deassert Time DC-coupled
2
450 ns
LOSS OF LOCK DETECT (LOL)
VCO Frequency Error for LOL Assert With respect to nominal 1000 ppm
VCO Frequency Error for LOL Deassert With respect to nominal 250 ppm
LOL Response Time 12.3 Mb/s 4 ms
OC-12 1.0 µs
OC-48 1.0 µs
ACQUISITION TIME
Lock to Data Mode OC-48 1.3 ms
OC-12 2.0 ms
OC-3 3.4 ms
OC-1 9.8 ms
12.3 Mb/s 40.0 ms
Optional Lock to REFCLK Mode 10.0 ms